True filter

Overview

You can use the True
filter to force a path in a policy to return true. For example, this can be useful to prevent a path from ending on a false case and consequently throwing an exception.

The following policy parses the HTTP request, and then runs Attachment1
on the message. If Attachment1
passes, the message is echoed back to the client by the Reflect
filter. However, if Attachment1
fails, the Attachment2
filter is run on the message. Because this is an end
node, if this filter fails, an exception is thrown.

By adding a True
filter to the Attachment2
filter, this path always ends on a true case, and so does not throw an exception if Attachment2
fails.